Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dong danh cho snippets" » "dong danh code snippets", "dong doanh cho snippets", "dong anh cho snippets", "cong danh cho snippets"
"dung using java snippets" » "dung ung java snippets", "dung sinh java snippets", "dung uong java snippets", "dung using data snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dong danh cho snippets") or ("dung using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong danh cho snippets") OR ("dung using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dong danh cho snippets ) or ( dung using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong danh cho snippets") or ("dung using java snippets"))) or ("locating bug core snippets"))*.